A novice fossil hunter immerses himself in the local pastime in the town of Lyme Regis in southwest England, an area that sits on a 95-mile stretch of shoreline known as the Jurassic Coast, a Unesco World Heritage site.

The special counsel, Robert S. Mueller III, will likely reach one of two conclusions about the president: Either there is evidence that he broke the law, or there is not. Mike Schmidt, a New York Times reporter, explains the possible outcomes.